package org.apache.lucene.search;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Constrains search results to only match those which also match a provided
 * query. Results are cached, so that searches after the first on the same index
 * using this filter are much faster.
 * 
 * @version $Id: QueryFilter.java 528298 2007-04-13 00:59:28Z hossman $
 * @deprecated use a CachingWrapperFilter with QueryWrapperFilter
 */
public class QueryFilter extends CachingWrapperFilter {

	/**
	 * Constructs a filter which only matches documents matching
	 * <code>query</code>.
	 */
	public QueryFilter(Query query) {
		super(new QueryWrapperFilter(query));
	}

	public boolean equals(Object o) {
		return super.equals((QueryFilter) o);
	}

	public int hashCode() {
		return super.hashCode() ^ 0x923F64B9;
	}
}
